Product name: emergency stop switch

Emergency stop-lock switch (hereinafter referred to as emergency stop-switch) is applicable to dangerous places with explosive mixture of gas and work places such as open pit coal mine and coal preparation plant.

1、 Main technical features

1.1 explosion-proof type: mine safety type, explosion-proof mark: ExibI;

1.3 contact capacity: 30V/10A;

1.4 contact Ω 0.1 or less contact resistance, vibration and impact after 0.2 or less Ω;

1.5 action force: 60N±10N; Reset force: 60N±10N;

1.6 performance: when force is applied to the drive gripper on either side of the emergency stop switch,

The contact state in the emergency stop switch shall be reversed and self-locking; When the external force is applied on the corresponding reset gripper, the contact state in the emergency stop switch should be restored.

1.7 external dimensions: 165mm×90mm×160mm;

Mass: 2kg.

2、 environmental conditions

2.1 normal working conditions

A) ambient temperature: -5℃ ~ +40℃;

B) average relative humidity: no more than 95% (+25℃);

C) atmospheric pressure: 80kPa ~ 106kPa;

D) where there is no significant vibration or impact;

E) where there is an explosive mixture of coal dust, methane and other corrosive gases that do not damage the insulation;

F) pollution level: level 3;

G) installation category: Ⅲ class.

2.2 worst storage and transportation conditions

High temperature: 60 ℃;

Low temperature: - 40 ℃;

Average relative humidity :95%(25℃).

Vibration: 50m/s2;

Impact: 500m/s2.

3、structure overview

The emergency stop switch is composed of shell, trip switch, emergency stop gripper, reset gripper, terminal and so on.

4、working principle

When a 60N±10N force is applied to the emergency stop gripper on either side of the emergency stop switch and displacement is generated, the travel switch in the emergency stop switch moves, the contact state is flipped, and the switch locks itself; When a force of 60N±10N is applied externally on the corresponding reset gripper, the travel switch in the emergency stop switch is activated again and the contact state is restored.

5、installation

Install the emergency stop switch on the bracket on both sides of the belt conveyor, connect the emergency stop gripper of the emergency stop switch with the pull rope successively, open the emergency stop switch junction box, and connect J (emergency stop signal) and O (power supply ground) with the cable to the corresponding terminal in the main machine of the belt conveyor integrated protection control device.

6、debugging

When a 60N±10N force is applied to the emergency stop gripper on either side of the emergency stop switch and displacement is generated, the travel switch in the emergency stop switch moves, the contact state is flipped, and the switch locks itself; When a force of 60N±10N is applied externally on the corresponding reset gripper, the travel switch in the emergency stop switch is activated again and the contact state is restored.